Sun Protection Factor - Forecast:

This is the prediction of Sun Protection Factor for skin types I, II, III and IV for a whole day stay outdoor for tommorrow. (Click on the corresponding symbol to get the map).


The skin type can characterised as follows:

Skin Type I
red hair
blue eyes
tan never
burn always
Skin Type II
blond hair
blue/green eyes
tan sometimes
sometimes always
Skin Type III
brown hair
gray/brown eyes
tan always
burn rarely
Skin Type IV
black hair
brown eyes
tan always
burn never


The forecast is done for a horizontally oriented plane receiver by using the CIE action spectrum for the human erythema derived by McKinlay and Diffey (CIE 1987).
The core procedure is a fast spectral UV model, which is already validated by measurements of irradiance (Schmalwieser et al. 2001) and daily dose made at 4 continents (Schmalwieser et al. 2005) as well as by comparisons to other models (Koepke et al. 1998, Schmalwieser et al. 2000).
A simple preparation scheme (Schmalwieser et al. 2002) is applied to total ozone measurements made by EPTOMS delivers appropriate TOC values for the next day.


Alois W. Schmalwieser:   e-mail: alois.schmalwieser()

Last modification: Nov. 4, 2014